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//Calculator program
#include <stdio.h>
#include <stdlib.h>
int main()
{
int menu; //Variable for the number the user inputs
float num1, num2, result; //Float variables for the user input and output, used floats in case the user enters e.g. 14.7
printf("Enter a number from the list below\n\n");
printf("1. Addition\n"); //Calculator menu, user must enter a value from 1 - 4 for the program to work
printf("2. Subtraction\n");
printf("3. Multiplication\n");
printf("4. Division\n\n");
printf("Enter number: "); //User input for the calculator menu
scanf("%d", &menu);
printf("\n");
switch(menu) //switch statement for menu
{
case 1:
printf("You entered Addition\n\n");
printf("Enter first number: "); //User input for first number
scanf("%f", &num1);
printf("Enter second number: "); //User input for second number
scanf("%f", &num2);
printf("\n");
result = num1 + num2; //Addition calculation
printf("%.2f + %.2f = %.2f\n", num1, num2, result); //Addition output
break;
case 2:
printf("You entered Subtraction\n\n");
printf("Enter first number: "); //User input for first number
scanf("%f", &num1);
printf("Enter second number: "); //User input for second number
scanf("%f", &num2);
printf("\n");
result = num1 - num2; //Subtraction calculation
printf("%.2f - %.2f = %.2f\n", num1, num2, result); //Subtraction output
break;
case 3:
printf("You entered Multiplication\n\n");
printf("Enter first number: "); //User input for first number
scanf("%f", &num1);
printf("Enter second number: "); //User input for second number
scanf("%f", &num2);
printf("\n");
result = num1 * num2; //Multiplication calculation
printf("%.2f * %.2f = %.2f\n", num1, num2, result); //Multiplication Output
break;
case 4:
printf("You entered Division\n\n");
printf("Enter first number: "); //User input for first number
scanf("%f", &num1);
printf("Enter second number: "); //User input for first number
scanf("%f", &num2);
printf("\n");
result = num1 / num2; //Division calculation
printf("%.2f / %.2f = %.2f\n", num1, num2, result);
break;
default:
printf("Enter correct number e.g 1 - 4\n"); //Outputted if the user enters a value other than 1 - 4
break;
}
return 0;
}
//End of code
dan49075 created this gist